Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 56: Poster III

Q 56.14: Poster

Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof

Towards ultracold fermions in a 2D honeycomb lattice — •Thomas Paintner, Daniel Hoffman, Tobias Lupfer, Wladimir Schoch, Wolfgang Limmer, Benjamin Deissler und Johannes Hecker Denschlag — Universität Ulm, Institut für Quantenmaterie, Albert-Einstein-Allee 45, 89081 Ulm

We are setting up a new experiment with ultracold fermionic atoms in a two-dimensional honeycomb lattice to investigate intriguing phenomena which are either related to relativistic quantum physics(e.g. Zitterbewegung, Klein tunnelling) or to condensed matter physics (quantum criticality, quantum spin liquid). This system has the underlying geometry of graphene, but can be tuned and controlled in a much greater range. In the experiment, a degenerate Fermi gas of ⁶Li will be created after laser cooling in a magneto-optical trap (MOT) and subsequent evaporative cooling in the vicinity of a Feshbach resonance in a strong optical dipole trap. The atoms will then be transferred optically into a glass cell, where they will be loaded into a two-dimensional honeycomb potential. We plan to use a site-resolved imaging technique in order to manipulate the particles and analyze their distribution in the lattice. We will show the experimental progress towards a degenerate Fermi gas.